Date: Fri, 15 Jun 2007 19:18:57 +0200 From: Gergely CZUCZY <phoemix@harmless.hu> To: Frank Behrens <frank@pinky.sax.de> Cc: freebsd-threads@freebsd.org Subject: Re: Linking to pthread library: undefined reference Message-ID: <20070615171857.GA89955@harmless.hu> In-Reply-To: <200706151701.l5FH1KuJ047078@pinky.frank-behrens.de> References: <200706151701.l5FH1KuJ047078@pinky.frank-behrens.de>
next in thread | previous in thread | raw e-mail | index | archive | help
--ikeVEW9yuYc//A+q Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jun 15, 2007 at 07:01:19PM +0200, Frank Behrens wrote: > Hi, >=20 > I could not find any information in the developers handbook, so I ask her= e for support. >=20 > I try to link an milter (sendmail mail filter) test application and get a= n error I do not=20 > understand. I use FreeBSD 6.2-STABLE-200705211513 with an userland from M= ay-03. > In my Makefile I have: > CFLAGS+=3D -I/usr/local/include -std=3Dc99 -pthread -v > LDADD+=3D -L/usr/local/lib -lmilter >=20 > This gives linker command: > cc -O2 -pipe -fno-strict-aliasing -march=3Dpentium4 -I/usr/local/include = -std=3Dc99 -pthread -v -g - > DDEBUG=3D1 -O1 -fno-omit-frame-pointer -Wsystem-headers -Wall -Wno-format= -y2k -W - > Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-a= rith -Wreturn- > type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wcast-align -Wunused-= parameter - > Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls -o fmilter = fmilter.o - > L/usr/local/lib -lmilter > Using built-in specs. > Configured with: FreeBSD/i386 system compiler > Thread model: posix > gcc version 3.4.6 [FreeBSD] 20060305 > /usr/bin/ld -V -dynamic-linker /libexec/ld-elf.so.1 -o fmilter /usr/lib/= crt1.o /usr/lib/crti.o=20 > /usr/lib/crtbegin.o -L/usr/local/lib -L/usr/lib fmilter.o -lmilter -lgcc = -lpthread -lc -lgcc=20 I don't think this is the problem here, but you should link against -pthrea= d, and not -lpthread. pthread is just an API here, while -pthread refers to the system-default threading library (with a pthread interface). > /usr/lib/crtend.o /usr/lib/crtn.o > GNU ld version 2.15 [FreeBSD] 2004-05-23 > Supported emulations: > elf_i386_fbsd > /usr/lib/libmilter.so: undefined reference to `pthread_detach' >=20 > In my opinion the symbol should be found in > /usr/lib/libpthread.so@ -> /lib/libpthread.so.2 >=20 > When I look into the libraries I see > > objdump -T /usr/lib/libmilter.so | fgrep detach > 00000000 D *UND* 00000000 pthread_detach >=20 > > objdump -T /usr/lib/libpthread.so | fgrep pthread_detach > 000077d4 w DF .text 000003a4 LIBTHREAD_1_0 pthread_detach > 000077d4 g DF .text 000003a4 LIBTHREAD_1_0 _pthread_detach >=20 >=20 > Did I make something wrong? I guess yes, but what? >=20 > Thanks for your help and best regards, > Frank > --=20 > Frank Behrens, Osterwieck, Germany > PGP-key 0x5B7C47ED on public servers available. >=20 > _______________________________________________ > freebsd-threads@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-threads > To unsubscribe, send any mail to "freebsd-threads-unsubscribe@freebsd.org" >=20 Bye, Gergely Czuczy mailto: gergely.czuczy@harmless.hu --=20 Weenies test. Geniuses solve problems that arise. --ikeVEW9yuYc//A+q Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) owGVVs9v3MYVthMUSBj0kFOKnh5SoI6jHe4PaS1r27UteWVFqRwLlVwBTQt1SA7J icgZZmYoeYNeU+RgoEV7TJAgPfRWtIde2j+hhwK9B+ip5957yjckd7WWHaBd2AL5 +Ob9/N437zfffvnaS6//489/eX/t6W8/vf7H1+JoraydUxkruTmXig0HgyG7vbU1 HrMNvPBxxKPxSKQJT0TywPz9+n2tnFCOHc8rMSEnnrh+VXCpfkBxzo0Vblq7lN0O FnozaSttpZNaTUiqQiqx/HZsuLKpMGxXxTqRKpvQh7V2ImGVkcrxqBBB8EjRAyN7 9G6taDju0Wgw2CTuaLA5GQwnw63Dh7Q2gLAHNa7OaEfkRihLFwaWJsEdekf2gjvT 0QCP+xTrukhIaUepVAlxNUdQqTYl9xHimVwuKBHnotCVMJZyrpJI67MeWY3z3J5R Lsw0EIRTZOuq0saFlw6cmZPThDzPYJ1KWThh6C0rVFJyWVDzJ22kN1E+64hXVSHj 1j+cUSYgmwaKhDFwsU+J9gG3DmqVICoHvRBfaiuQtRA7RzO6FY7Y0fH2zsEu8yUa jEfD4Xi4ThfS5T4S6JrC20+NLunhNOBzNlgPfdAIc04P+ZlAXAJmc37eVO7+g4Pt vaO16frsVbbfr63pFzrmRV+quKgTQcy6BB/jrS1ilUPZeULsHAcPZtuzWXPuVXaw crCQEbGircmiZMe5tJTJc2GboqFYsS5LBOojiGNij0awLiu4S5WGSyNjx3ghuQVi yAM3zuGqAqJkXW7QC0OdBi8OlhhMwNFstrvzeA/fh3A4bF3pUjqWGl4KVmngEaGx Ezu3TpQsx3EPD3bCiwJ/od6iCI7mozNIGrNeXiuUHpDm3lJnpE2iAkS1wyB5O6W0 PqFnhZ1fBjwY30d2YoSrjfK2vQ4EMbeOfVhzH8UFlERTIpX54xbNj/0pm/NEXyy0 UbxM4aWLbBqsxOaD9pPMbB3Z2MjKeUPt4Po8gVgcwdgLo2wTTwJMckxzIuLCEjFN aYf6adA9hbox/M1QoMdNM6Ma7wxDaCsRW49NUEUqsxpeGiBPFnDvy/Xbt6hthgdM BeSaBk1NY0udiGJCnnmeQJoBR+dolx+x9XAjvEXvd3Z+7vnk1mB9MIYaNfFFUvXB EewnxJK54qWMWQdMH7R4ImJ8ZqJIQ6vD4Wq+bXoy6k+D2Lghsl5K8C5D3SJ+VRiJ TCpfnudqc7BQo5UidgXDg08JWCuWUC7iVup9eM5QNxy4zNOQ8xOGf57ZgC6wauk5 TPRQb0dzXZPNG1psSSsDm4OWuiGZBknP01LgOXPpLqSFX9j9oPYspmj7cL+ze5F7 IlmOmRGpnxXQIkIIuglKRMrrwsfodXz3kavhoM+3Wsq6dOFHIOWxuBkGV8oHVr1S ZRQTOnvvPSYktOj5KByOn235BhuM2WjdN52OWhIHxERZFw0R20nzhdDlU4+00zSy yapv/O+6YvWkYWXcJ6JLVahY+Gx/0WVwmgjH4/zG8pZoCFdXUvngfFvsvIx0sehD 5C8X2ETmV3wuym/1PWJ36HlxOFo4OcmFApcXuLt8BZvadyWW4JZ9skJA7Q7p6IOk Litixy9Oj35JaWZERW0WODPoftT8ZkRvP35v9jZdyp/NexHRN7q6DH/p66qFxvbm ZrJBdOF9PqDQ7x6dz3UO+cH+zvE7P97dnp0OT58P4dJARv+TgdMXJtFmMpMJClji xsRWAOLMPXyxcKjsLuRZLaylubDtgF3k3N29vO2wo9hmd8DgGcxLUTW3fuRXASMy bhLba8HX7DN4ZKw9+8x+06NHGCNzIUWM3WRP4O5Rcygd7h2yMzGnwZPxzub9jc3d GQFjVR1hx0DLjR8J4ufYQvx6tVxcTv+/H06kmCYMBWurZO9176E2WbPktBNtHVRz 56pJv+/fbLii1/d6iLv54tew/hWjvmAa09XdRRGoxS9SzdrWLFKA9ZtXzrAV9dWg 3mxTDXbmohcEKFgmijnd/6iOP5oH3pjDIGetOIwb8T3cg2WBZoZ5HQRtG06EUH5+ /OoWou5K4g61gEFxvmRXT7XYUDFoFhX+5O7L37rmV+fF3v36S7/66trnP/z4tT+8 +9/fH/3t6e/+tHZT/fTjf42+vPbFj776/j//873+r79z/d+fvfL0u39948bhz74G =jAfS -----END PGP SIGNATURE----- --ikeVEW9yuYc//A+q--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070615171857.GA89955>